Magnetic disc drive head alignment system

Details Magnetic disc drive head alignment system Magnetic disc drive head alignment system

1982-04-12

1984-10-16

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 558, G11B 2110

Patent

active

044778490

ABSTRACT:
A system is provided for aligning the read/write magnetic heads in a multi-head disc drive which includes a four quadrant balanced circuit and which responds to the peak amplitudes of dibits recorded in servo tracks on the discs of a prerecorded servo disc pack as read by the various heads to produce, without offset errors, digital signals representative of individual head misalignments; the system being insensitive to distortions of waveform. The system can also be used to provide an analog position signal to a feedback servo mechanism for positioning the head, or heads, which is insensitive to waveform distortions and to baseline shift due to write recovery.

REFERENCES:
patent: 4085427 (1978-04-01), Dunn

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